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IXESHA: 2023-04-07 I-HITS: 45

Introduction to explosion-proof knowledge and practical application ofiimfonomfono ezingaqhushumbayo

I-JWBT811 (1)_副本

1.Basic outline of explosion-proof knowledge

Any location with a potential explosion hazard is a hazardous location. But in petroleum, chemical industry, coal and other production fields, explosive dangerous environment will inevitably be formed. The basic conditions for explosion, also known as the explosion triangle principle, zi:flammable substances, air (oxygen), umthombo wokutshisa (electric spark, hot surface).

 

Then avoiding the formation of an explosive environment, eliminating possible sources of danger, and limiting one or several elements can all meet the explosion-proof requirements.

 

Gas and vapor explosion hazard environments are divided into Zone 0, Zone 1 and Zone 2 according to the frequency and duration of explosive mixtures.

Zone 0 (level 0 hazardous area) refers to the area where explosive gas, vapor or mist appears continuously or for a long time or frequently in a short time during normal operation.

Zone 1 (Level 1 hazardous area) refers to the area where explosive gas, vapor or mist may appear (expected periodically or occasionally) during normal operation.

Zone 2 (Level 2 Hazardous Area) Refers to the area where explosive gas, vapor or mist may appear occasionally for a short period of time even if it does not appear during normal operation.

 

2.Overview of explosion-proof telephones

Umnxeba ongaqhushumbayos are used in flammable and explosive places such as izityalo zamandla kwaye izityalo zemichiza. According to the special explosion-proof structure design, they can still work safely in complex, harsh and explosive environments. It is the terminal equipment of explosion-proof communication system and has the basic functions of ordinary telephone. 


3. Iimpawu zeMveliso

◆The telephone can form an independent communication system with the program-controlled exchange and dispatching server.

◆Can be directly connected to the telecommunications network

◆After the call system is formed, each phone is an independent workstation, and one of them fails

Does not affect the work of the entire system

◆The patented design of the phone shell is waterproof and dust-proof, no need for a waterproof cover, beautiful and practical.

◆The internal circuit of the telephone adopts the international common double-sided integrated circuit, which has the advantages of accurate number sending and call clear, stable work and other advantages.

aluminiyam die-casting shell, high mechanical strength, strong impact resistance.

◆High-temperature electrostatic plastic spraying on the surface of the shell, good anti-static ability and eye-catching color.


4.Technical indicators of explosion-proof telephone


Ubushushu obugcweleyo: -45~+ 60 ℃

Ukufuma okuhambelanayo:≤95%

Atmospheric pressure: 80~I-110 kPa

Environmental noise:≤60dB

         Explosion-proof mark: ExdibⅡBT6

Udidi lokhuselo: IP67

Working frequency: 300~3400 Hz

Ringing tone level:≥70 dB

I-JWBT810 (2)

5. Practical application cases

I-webp. 1578294695879342


I-Ningbo Joiwo-ubungqina bokudubula, obukhethekileyo kwimveliso yokuthintela ukuqhuma / iifowuni zokungangeni manzi, iifowuni zasejele kunye nezinye iifowuni zikawonkewonke ezixhathisa ukonakalisa iminyaka engaphezu kwe-17.

 

Senza uninzi lwamalungu ngokwethu (i-handset, i-keypad, i-hanger njl.njl) Sinazo zonke iintlobo zoomatshini abenza ukubumba, ukutofa, ukuphosa, ukuphosa, i-hardware machining. .Njengomthengisi othembekileyo, sinokukubonelela ngeemveliso ezikumgangatho ophezulu kunye nenkonzo elungileyo emva kokuthengisa.

 

Ningbo Joiwo Explosionproof Science & Technology Co., LTD         

 

Yongeza: No. 695, Yangming West Road, Yangming Street, Yuyao City, Zhejiang Province,China 315400

 

Umnxeba: +86-574-58223617 / Iseli: +8613858202780

 

I-imeyile: sales@joiwo.com

 

skype: + 8613858202780

 




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